YD-T 841.6-2017-地下通信用塑料管 第6部分：栅格管

ICS33.040.50

M42

YD

CommunicationsIndustryStandardof

thePeople'sRepublicofChina

YD/T841.6—2017

Replace

ReplaceYD/T1324-2004

Plasticductfortelecommunication

undergroundconduit——

Part6:

Gridduct

地下通信用塑料管第6部分：栅格管

（EnglishTranslation）

IssueDate:2017-11–07Implementationdate:2018-01–01

IssuedbyMinistryofIndustryandInformationTechnologyof

thePeople'sRepublicofChina

YD/T841.6—2017

Foreword

ChinaCommunicationsStandardsAssociation(CCSA)isinchargeofthisEnglishtranslation.

IncaseofanydoubtaboutthecontentsofEnglishtranslation,theChineseoriginalshall

beconsideredauthoritative.

YD/T841Plasticductfortelecommunicationundergroundconduitconsistsofthefollowingparts

underthegeneraltitle:

——Part1:General;

——Part2:Solid-wallduct;

——Part3:Double-wallcorrugatedduct;

——Part4:Silicoreplasticduct;

——Part5:Plumblossomduct;

——Part6:Gridduct;

——Part7:Honeycombduct;

——Part8:Plastic-alloycompositeduct;

……

ThispartisthePart6ofYD/T841.

ThispartisdraftedinaccordancewiththerulesgivenintheGB/T1.1-2009Directivesfor

standardization–Part1:Structureanddraftingofstandards.

ThispartreplacestheYD/T1324-2004Unplasticizedpolyvinylchloride(PVC-U)multi-holepipe

forburiedtelecommunicationconduittogetherwithYD/T841.7-2017.

Inadditiontoanumberofeditorialchanges,thefollowingtechnicaldeviationshavebeen

madewithrespecttotheYD/T1324-2004Unplasticizedpolyvinylchloride(PVC-U)multi-hole

pipeforburiedtelecommunicationconduit:

——thetestofductdropwasdeleted(seeTable3inthe2004edition);

——hightemperatureburningresiduetestwasadded（seeTable2）;

——environmentalprotectionperformancewasadded（see4.7）;

——thestateadjustmenttimeofthedrophammerimpacttestwasmodified(see5.5,5.3.3in

the2004edition);

——thedeliveryinspectionwasmodified(see6.3,6.2inthe2004edition);

Attentionisdrawntothepossibilitythatsomeoftheelementsofthispartmaybethesubject

ofpatentrights.Theissuingbodyofthisdocumentshallnotbeheldresponsiblefor

identifyinganyorallsuchpatentrights.

ThispartwasproposedandpreparedbyCCSA.

ThepreviouseditionsofYD/T841.6areasfollows:

——YD/T1324-2004.

II

YD/T841.6—2017

Plasticductfortelecommunicationundergroundconduit

Part6:Gridduct

1Scope

Thispartspecifiessymbols,productclassifications,modelsandtestmethodsofthegridducts

fortelecommunicationundergroundconduits.

Thispartisapplicabletothegridductsusedinundergroundtelecommunicationconduit

systems.

2Normativereferences

Thefollowingreferenceddocumentsareindispensablefortheapplicationofthisdocument.

Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatest

editionofthereferenceddocument(includinganyamendments)applies.

GB/T2828.1-2012Samplingproceduresforinspectionbyattributes-Part1:Samplingschemes

indexedbyacceptancequalitylimit(AQL)forlot-by-lotinspection

GB/T8170-2008Rulesofroundingofffornumericalvalues＆expressionandjudgementof

limitingvalues

GB/T8801-2007Testmethodforunplasticizedpolyvinylchloride(PVC-U)fittingsbyfalling

GB/T8803-2001Injection-mouldedunplasticizedpoly(vinylchloride)(PVC-U),chlorinatedpoly

(vinylchloride)(PVC-C),acrylonitrile-butadiene-styrene(ABS)andacrylonitrile-styrene

-acrytester(ASA)fitting-Hotoventestmethod

GB/T26572Requirementsofconcentrationlimitsforcertainrestrictedsubstancesin

electricalandelectronicproducts

GB/T841.1-2016PlasticductfortelecommunicationundergroundconduitPart1:General

3Productmodel,classificationandstructure

3.1Productmodel

ProductmodelshallconformtoYD/T841.1-2016,4.2.

3.2Productclassification

ProductareclassifiedaccordingtoYD/T841.1-20164.1.

3.3Productstructure

3.3.1Schematicofductstructure

ThetypicalcrosssectionstructurediagramofgridductisshowninFigure1.

1

YD/T841.6—2017

a)3-holeb)4-holec)6-holed)9-hole

W——Width;

H——Height;

d——Innerholesize;

ee——Thicknessofouterwall;

ei——Thicknessofinnerwall.

Figure1Typicalcrosssectionstructurediagramofgridduct

3.3.2Ductconnection

TheconnectionofgridductisshowninFigure2.

Duct1CasingductA/2A/2eDuct2

A-Lengthofjointing

e–Wallthicknessofcasingduct

Figure2Schematicofductconnection

4Requirements

4.1Material

ThemainmaterialoftheplasticductshallbePVC-Uresin,inwhichnecessaryadditivesfor

improvementofproductperformanceareadded.

4.2Color

Thecolorofductisusuallynaturalcolorofthematerial,oragreeduponbythecustomers

andthemanufacturers.Thecolorshallbeuniform.

4.3Appearance

Eachholeintheductshallbesquare.Theinnerandoutersurfacesoftheductshallbesmooth

andflat,withnobubble,crack,pit,bulge,colorchanginglineorobviousimpurity.Thecross

2

YD/T841.6—2017

sectionofductendshallbeflat,withnocrackorrag,andbeverticaltothelongitudinal

axisoftheduct.

4.4Dimensions

ThetypicaldimensionsofgridductareinTable1.Otherdimensionsshouldbeagreedupon

bythecustomersandthemanufacturers.Casinglengthmayalsobeagreeduponbythecustomers

andthemanufacturers.

Thelengthoftheductjointshallnotbelessthan200mm,andthethicknessshallnotbeless

thantheminimumouterwallthicknessofthecorrespondingduct.

Table1Typicaldimensionsofgridduct

Unit:mm

ThicknessThickness

InnerholeWidthHeight

SpecificationsofouterofinnerLengthaL

sizedWH

walleewallei

28×328±0.52.2～2.61.6～2.0

42×442±0.52.8～3.22.2～2.6

50×450±0.53.2～3.62.6～3.0

28×628±0.52.2～2.61.6～2.0≤110≤1106000

33×633±0.52.2～2.61.6～2.0

28×928±0.52.2～2.61.6～2.0

33×933±0.52.2～2.61.6～2.0

Note:Theradiusoftheperipheralarcshouldbe10mm～15mm.

aTheallowablelengthdeviationis0～30mm,andthedeliverylengthcanalsobeagreed

uponbythemanufacturersandthecustomers

4.5Curvature

Thecurvatureofrigid-straightductshallnotexceed0.5%inthesameside,andtheductshall

nothaveS”shapebending.

4.6Mechanicalandenvironmentalrequirements

ThemechanicalandenvironmentaltestshallmeettherequirementsinTable2.

Table2Mechanicalandenvironmentalrequirements

No.ItemUnitPerformancerequirement

（0±1）℃,2h,

1Drophammerimpact/

9ormorespecimentsof10specimensshallnotgetbroken

2CompressivestrengthkN/m2≥600

Whentheverticaldeformationofthespecimencrosssection

3Flatteningtest—reaches25%,theloadshallberemovedimmediately.The

specimensshallnotbebrokenduringandafterthetest

3

YD/T841.6—2017

4TensileyieldstrengthMPa≥30

(150±2)℃for60min,theinspectionshallbecarriedout

afterthespecimensarecooleddowntoroomtemperature：the

5Longitudinalshrinkage—

specimensshallnotbestratified,crackedorblistered;

longitudinalshrinkageratioshall≤5%

Theconnectionundertestshallnotbebrokenandhaveno

6Connectionsealing—

leakage

7Vicatsofteningtemperature℃≥79

8Staticfrictioncoefficient—≤0.35

Hightemperatureburning

9—Tobedetermined

residue

4.7Environmentalprotectionperformance

Whennecessary,theenvironmentalprotectionperformancetestcouldbecarriedoutontheduct.

Therestrictedsubstanceineachhomogeneousmaterialthattheductconsistsshallmeetthe

requirementsinGB/T26572.

4.8Jointandplugperformance

PerformancerequirementsforjointandplugrefertoAppendixA.

5Testmethod

5.1Rulesofroundingofffornumericalvalues

Ifthetestresultsofthetestitemsinthispartarenotexplained,thecomparisonmethod

ofmodifiedvaluesinGB/T8170-2008isadoptedtodeterminethetestresults.

5.2Standardenvironmentforstateadjustingandtest

InaccordancewithYD/T841.1-2016,5.1.

5.3Colorandappearanceinspection

InaccordancewithYD/T841.1-2016,5.2.

5.4Dimensionsandlength

InaccordancewithYD/T841.1-2016,5.3.

5.5Curvature

InaccordancewithYD/T841.1-2016,5.4.

5.6Drophammerimpacttest

ThetestiscarriedoutinaccordancewithYD/T841.1-2016,5.5.Thed90hammerheadwiththe

4

YD/T841.6—2017

massof1kgandtheimpactheightof1000mmshouldbeadoptedforthetest.Eachspecimenshall

beimpactedbythedrophammerforonlyonce.

5.7Compressivestrength

InaccordancewithYD/T841.1-2016,5.8.

5.8Flatteningtest

InaccordancewithYD/T841.1-2016,5.6.

5.9Tensileyieldstrengthtest

InaccordancewithYD/T841.1-2016,5.12.

5.10Longitudinalshrinkagetest

InaccordancewithYD/T841.1-2016,5.14.

5.11Connectionsealingtest

InaccordancewithYD/T841.1-2016,5.15.

5.12Vicatsofteningtemperaturetest

InaccordancewithYD/T841.1-2016,5.16.

5.13Staticfrictioncoefficient

InaccordancewithYD/T841.1-2016,5.17.

5.14Hightemperatureburningresiduetest

InaccordancewithYD/T841.1-2016,5.20.

5.15Environmentalprotectionperformance

InaccordancewithYD/T841.1-2016,5.21.

6Inspectionrules

6.1General

Theproductsshallbeinspectedbyqualitydepartmentofthemanufacturerandbeattachedwith

qualifiationlabelsbeforethedelivery.

6.2Classificationofinspection

Thequalityinspectionoftheproductisclassifiedintodeliveryinspectionandtype

inspection.TheinspectionitemsandcorrespondingclassificationsareinTable3.

Table3Theinspectionitemsandclassificationofduct

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YD/T841.6—2017

Delivery

ClausenumberofClausenumberoftestTypeinspection

No.Inspectioniteminspection

requirementsmethoditems

items

1Color4.25.3√√

2Appearance4.35.3√√

3Dimensions4.45.4√√

4Length4.45.4√√

5Curvature4.55.5√

6DrophammerimpactTable2No.15.6√√

7CompressivestrengthTable2No.25.7√√

8FlatteningtestTable2No.35.8√√

Tensileyield

9Table2No.45.9√

strength

Longitudinal

10Table2No.55.10√

shrinkage

11ConnectionsealingTable2No.65.11√

Vicatsoftening

12Table2No.75.12√

temperature

Staticfriction

13Table2No.85.13√

coefficient

Hightemperature

14Table2No.95.14√

burningresidue

Environmental

15protection4.75.15√

performancea

NOTE:“√”representsthecorrespondingitemisselectedfortypeinspectionordeliveryinspection.

aOnlywhennecessary.

6.3Deliveryinspection

6.3.1Group

Onegroupisdefinedasproductswithsameamount,andaremanufacturedbysamebatchofraw

materials,samerecipeandsameprocesses.Theamountofeverygroupdoesnotexceed6×104

kg.Iftheproductionislowandcannotreach6×104kgin6days,thentheproductsmanufactured

in7dayscanbevaluedasonegroup.

6.3.2Deliveryinspectionitems

SeeTable3.

6.3.3Classificationofdeliveryinspectionitems

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YD/T841.6—2017

6.3.3.1Thedeliveryinspectionitemsareclassifiedinto100%inspectionitemsandsampling

inspectionitems.Exceptforcolorandapperanceare100%inspectionitems,otherdelivery

inspectionitemsaresamplinginspectionitems.

6.3.3.2ThesamplingfordimensionstestisaccordingtoGB/T2828.1-2012,thenormally-test

-oncesamplingscheme,andtheinspectionleveltakeslevelIwithAQL6.5.Thesamplingscheme

isinTable4.

Table4Samplingscheme

Unit:root

NumberofgroupNumberofsampleNumberofreceivedNumberofrejected

NnAcRe

≤150812

151～2801323

281～5002034

501～12003256

1201～32005078

3201～10000801011

6.3.3.3Amongthequalifiedsamplingproducts,enoughsamplesarepickedrandomly,andother

deliveryinspectionitemsinTable3shallbecarriedoutdependingontheproduct

classification.

6.3.4Criterionofdeliveryinspection

Theproductisunqualifiedifanyitemofthe100%inspectionitemsisfailed.Agroupis

unqualifiedifanydimensionitemsisfailedaccordingtotherequirementsinTable4.Ifthere

isonemechanicalitemfailed,doubleamountofsamplesshallberandomlypickedfromthesame

groupandthesametestshallbecarriedout.Ifthesamplesstillfailthere-tests,thegroup

isjustifiedasunqualified.Thegroupofunqualifiedproductsshallbedelivered.

6.4Typicalinspection

6.4.1Typicalinspectionitems

SeeTable3.

6.4.2Samplingfortypeinspection

Thetypeinspectionsamplesshallbepickedrandomlyfromtheproductsthatarequalifiedin

thedeliveryinspection.

6.4.3Requirementsoftypicalinspection

Normallythetypeinspectioniscarriedoutonceayear.Theinspectionshallbecarriedout

whenoneofthefollowingcasesoccurs:

a)Newproductororiginalproducttochangetheproductionsiteofthefinalizationoftrial

production;

7

YD/T841.6—2017

b)Thestructure,materialorproducingprocesschangealot,mayinfluenceperformanceof

theproduct;

c)Themanufactureresumeproducingafter6monthsorlongerinterval;

d)Theresultsofdeliveryinspectionhaveobviousdifferencesfromtheresultsofthelast

timetypeinspection.

6.4.4Criterionoftypeinspection

Ifanyoftheinspectionitemsisunqualified,doubleamountofsamplesshallbepickedfrom

thesamegroupandthesametestshallbecarriedout.Ifthesamplesstillfailthere-tests,

thetypeinspectionisjustifiedasunqualified.Ifthisoccurs,theacceptance,manufacturing

oftheproductsofthesamemodelshallbestopped.Themanufacturershallanalyzethereasons

andtakecorrespondingactionsuntilthetypeinspectionisqualified,thenthemanufacturing

andacceptancecanberesumed,

7Marking,delivery,storage

7.1Marking

Theproductshallhavemarkingsofthefollowing:model,nameofthecompanyorbrand,executed

standardandmanufacturingdate.Everyductshallcontainatleastonecompletemarking.

7.2Delivery

Theproductsshallavoidbeingviolentstriked,tossedorsmashedduringdelivery.

7.3Storage

Thestorageplaceshouldbeflat,andtheproductsshallbestackedorderly.Thestackheight

shallnotexceed2m.Theproductsshallbeatleast1mawayfromheatsourcesandavoidbeing

exposedtothesun.

Stocktemperature:-20℃～+60℃.

8

YD/T841.6—2017

AnnexA

（Informative）

Requirementsandtestmethodsforjointsandplugsofduct

A.1TheJointofduct

A.1.1Theshapeoftheinnerwalloftheductjointshallbeexactlythesameasthatofthe

outerwalloftheduct.

A.1.2Thevicatsofteningtemperatureisgreaterthanorequalto74℃.Inaccordancewith

YD/T841.1-2016,5.16.

A.1.3ThefallingtestofcasingductiscarriedoutinaccordancewithGB/T8801-2007,The

specimensshallnotbedamagedorcracked.

A.1.4HotoventestiscarriedoutinaccordancewithGB/T8801-2007,Thetestresultsshall

conformtothedecisionresultsinChapter6ofGB/T8803-2001.

A.2Theplugofduct

A.2.1Ductcanbeusedwithsingleholetypeplug,alsocanbeusedwithintegralplug.But

theintegralplugshouldbeabletoflexiblyadjustthenumberandpositionofblockedholes

inaporousduct.

A.2.2Thegapbetweentheductplugandtheductholeshouldbeclosedtightly.Thepulling

forceofsingleholeorintegralplugshouldnotbelessthan8N.

_________________________________

9

YD/T841.6—2017

Contents

Foreword..............................................................................II

1Scope................................................................................1

2Normativereferences.................................................................1

3Productmodel,classificationandstructure..........................................1

4Requirements.........................................................................2

5Testmethod..........................................................................4

6Inspectionrules.....................................................................5

7Marking,delivery,storage...........................................................8

AnnexA................................................................................9

I

YD/T841.6—2017

Foreword

ChinaCommunicationsStandardsAssociation(CCSA)isinchargeofthisEnglishtranslation.

IncaseofanydoubtaboutthecontentsofEnglishtranslation,theChineseoriginalshall

beconsideredauthoritative.

YD/T841Plasticductfortelecommunicationundergroundconduitconsistsofthefollowingparts

underthegeneraltitle:

——Part1:General;

——Part2:Solid-wallduct;

——Part3:Double-wallcorrugatedduct;

——Part4:Silicoreplasticduct;

——Part5:Plumblossomduct;

——Part6:Gridduct;

——Part7:Honeycombduct;

——Part8:Plastic-alloycompositeduct;

……

ThispartisthePart6ofYD/T841.

ThispartisdraftedinaccordancewiththerulesgivenintheGB/T1.1-2009Directivesfor

standardization–Part1:Structureanddraftingofstandards.

ThispartreplacestheYD/T1324-2004Unplasticizedpolyvinylchloride(PVC-U)multi-holepipe

forburiedtelecommunicationconduittogetherwithYD/T841.7-2017.

Inadditiontoanumberofeditorialchanges,thefollowingtechnicaldeviationshavebeen

madewithrespecttotheYD/T1324-2004Unplasticizedpolyvinylchloride(PVC-U)multi-hole

pipeforburiedtelecommunicationconduit:

——thetestofductdropwasdeleted(seeTable3inthe2004edition);

——hightemperatureburningresiduetestwasadded（seeTable2）;

——environmentalprotectionperformancewasadded（see4.7）;

——thestateadjustmenttimeofthedrophammerimpacttestwasmodified(see5.5,5.3.3in

the2004edition);

——thedeliveryinspectionwasmodified(see6.3,6.2inthe2004edition);

Attentionisdrawntothepossibilitythatsomeoftheelementsofthispartmaybethesubject

ofpatentrights.Theissuingbodyofthisdocumentshallnotbeheldresponsiblefor

identifyinganyorallsuchpatentrights.

ThispartwasproposedandpreparedbyCCSA.

ThepreviouseditionsofYD/T841.6areasfollows:

——YD/T1324-2004.

II

YD/T841.6—2017

Plasticductfortelecommunicationundergroundconduit

Part6:Gridduct

1Scope

Thispartspecifiessymbols,productclassifications,modelsandtestmethodsofthegridducts

fortelecommunicationundergroundconduits.

Thispartisapplicabletothegridductsusedinundergroundtelecommunicationconduit

systems.

2Normativereferences

Thefollowingreferenceddocumentsareindispensablefortheapplicationofthisdocument.

Fordatedreferences,onlytheeditioncitedapplies.Forundatedreferences,thelatest

editionofthereferenceddocument(includinganyamendments)applies.

GB/T2828.1-2012Samplingproceduresforinspectionbyattributes-Part1:Samplingschemes

indexedbyacceptancequalitylimit(AQL)forlot-by-lotinspection

GB/T8170-2008Rulesofroundingofffornumericalvalues＆expressionandjudgementof

limitingvalues

GB/T8801-2007Testmethodforunplasticizedpolyvinylchloride(PVC-U)fittingsbyfalling

GB/T8803-2001Injection-mouldedunplasticizedpoly(vinylchloride)(PVC-U),chlorinatedpoly

(vinylchloride)(PVC-C),acrylonitrile-butadiene-styrene(ABS)andacrylonitrile-styrene

-acrytester(ASA)fitting-Hotoventestmethod

GB/T26572Requirementsofconcentrationlimitsforcertainrestrictedsubstancesin

electricalandelectronicproducts

GB/T841.1-2016PlasticductfortelecommunicationundergroundconduitPart1:General

3Productmodel,classificationandstructure

3.1Productmodel

ProductmodelshallconformtoYD/T841.1-2016,4.2.

3.2Productclassification

ProductareclassifiedaccordingtoYD/T841.1-20164.1.

3.3Productstructure

3.3.1Schematicofductstructure

ThetypicalcrosssectionstructurediagramofgridductisshowninFigure1.

1

YD/T841.6—2017

a)3-holeb)4-holec)6-holed)9-hole

W——Width;

H——Height;

d——Innerholesize;

ee——Thicknessofouterwall;

ei——Thicknessofinnerwall.

Figure1Typicalcrosssectionstructurediagramofgridduct

3.3.2Ductconnection

TheconnectionofgridductisshowninFigure2.

Duct1CasingductA/2A/2eDuct2

A-Lengthofjointing

e–Wallthicknessofcasingduct

Figure2Schematicofductconnection

4Requirements

4.1Material

ThemainmaterialoftheplasticductshallbePVC-Uresin,inwhichnecessaryadditivesfor

improvementofproductperformanceareadded.

4.2Color

Thecolorofductisusuallynaturalcolorofthematerial,oragreeduponbythecustomers

andthemanufacturers.Thecolorshallbeuniform.

4.3Appearance

Eachholeintheductshallbesquare.Theinnerandoutersurfacesoftheductshallbesmooth

andflat,withnobubble,cr